William harrison



(No ModeL) W. HARRISON.

NUT LOOK.

No. 430,802. Patented June 24,1890.

' UNITED STATES PATENT OFFICE.

\VILLIAM HARRISON, OF KINGSTON, ONTARIO, CANADA.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 430,802, dated June 24, 1890.

Application filediNovemher l, 1889, Serial No. 328,893. (No model.)

To whom it may concern:

Be it known that I, WILLIAM HARRISON, of Kingston, in the Province of Ontario and Dominion of Canada, have invented certain new and useful Improvements in Nut-Locks; and I do hereby declare that the following is a full, clear, and exact description of theinvention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to certain improvements in nut-locks; and the invention consists in certain novel features of construction and in combinations of parts, more fully described hereinafter, and particularly pointed out in the claims.

Referring to the accompanying drawings, Figure l is a side elevation of a rail, showing two nuts, one in position just before being locked by the present invention and the other nut being in locked adjustment. Fig. 2 is a similar view showing a single nut without a washer, locked by a somewhat-different key from that of Fig. 1. Fig. 3 is a detail perspective of the key of Fig. 1. Fig. 4 is a detail perspective of the key of Fig. 2. Fig. 5 is a View of a single locking-key for two adjacent nuts. Fig. 6 is an edge view of the key of Fig. 3.

In the drawings, the reference-letter aindicates a rail. I) indicates an angle-bar. c indicates the bolts, and d the angularor square nuts thereon.

The locking-key e consists of an integral substantially right-angled piece of metal having the lower long arm f formed to rest in the angle of the angle-bar beneath the nut, and the upwardly-extending arm g to extend up beside and partially beneath one side of the nut. On the outer side of the lower arm f, near the inner end thereof, is formed an upwardly-beveled shoulder or stop It, as clearly shown, and the inner end of the arm beyond said shoulder and the upper arm are reduced in thickness, so that the corner of the nut can turn over the same. The key shown in Fig. 4 is further provided with an upwardly and outwardly beveled shoulder or stop h at the upper end of its upright arm, and the inner should be screwed up against the angle-bar as tightly as possible, with its lower side parallel with the lower side of said bar. The lower end of the key is then inserted (from the left if it is a right-hand nut) into the space between the angle-bar and the lower side of the nut until the upper arm of the key tightly engages the periphery of a washert' beneath the nut or the beveled edges of the key of Fig. 4 fit beneath the edge of the nut, where no washer is employed, as clearly shown by the left-hand not of Fig. 1. Now, to lock the not it should be turned a partial revolution in the direction to unscrew the nut from the bolt and the two left-hand corners of the nut will slip over the upper end of the upper arm and the inner end of the lower arm, and the lower left-hand corner of the nut will engage and tightly lock against shoulder h and absolutely and positively prevent further loosening or reverse rotation of the nut, for the greater the force applied toward loosening the nut the tighter it. presses on said shoulder, as clearly shown in Figs. 1 and 2. here the key of Fig. 3 is used, the upper left-hand corner of the nut rests on the upper portion of the upper arm of the key; but where no washer is employed and the key of Fig. 4 is used the upper left-hand corner of the nut is also locked against the upper beveled shoulder h. (See Fig. 2.) Whenthe nut is locked on the shoulder or shoulders of the key, it firmly holds the key in position against any tendency to jar or shake out of place; but the nut can be unlocked when necessary by simply turning the nut in a direction to screw it up until released from the locking-shoulders and then slipping out the key.

In Fig. 5 a double lock or key is shown for two adjacent nuts; and this look consists of a key, such as shown in Figs. 1 or 2, provided with a horizontal rod or extension j, integral therewith and of a length'to extend to and beneath the next nut, and the outer end of this rod is provided with a beveled shoulder 7t, corresponding with shoulder h, to fit be neath one of the adjacent nuts.

The key on one end of the rod is inserted beneath one of the nuts, as before described, and the opposite end of the rod fits beneath the next nut. The nut against which the key fits is then reversed sufficiently to lock itself and the key which'holds the opposite end of the rod in position to lock the nut at that end Without reversing it.

A novel feature of this invention is that in order to firmly lock the nut it is reversed.

The shoulders h h form stops, against which the corners of the nut bear and abut when reversed, and said stops or shoulders are preferably formed beveled, so as to receive the nut when turned at an angle.

It is evident that this lock can be employed with nuts used for other purposes than those here shown.

Having thus fully described my invention,

what I claim *is .1. As a new article of manufacture, a nutlocking key consisting of an arm to lie at one edge of a nut and another arm extending substantially at right angles from the first arm and adapted to lie at another edge of the nut, the first-mentioned arm having a stop-shoulder facing toward the other arm and adapted to engage a corner of the nut and prevent loosening rotation thereof, and the other arm being of such thickness as to allow the nut to project over the same, substantially as described.

2. A nut-locking key consisting of two arms extending substantially at right angles from each other to lie at two edges of a nut, said arms being of such thickness at their inner edges that the nut can fit over the same, and said two arms having two stop-shoulders located, as set forth, and facing correspondingly to engage two corners of the nut and prevent loosening rotation of the same, substantially as described.

3. The herein-described lock for two adjacent nuts, consisting of a rod to extend between the nuts, having a shoulder-.at one end to engage a corner and prevent loosening rotation of that nut, and at the other end having an upwardly-extending arm, over which the other nut is adapted to turn, and a stop near the base of said arm to engagea corner of and prevent loosening rotation of this nut, substantially as described.

In testimony that I claim the foregoing as my ownIaffiX my signaturcin presence of two witnesses.

v WILLIAM. HARRISON.

Witnesses:

D. A. GIVENS, F. J. HALL. 

